Wig base



FIG. 1 is a top plan view of a wig base according to our new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a left side view thereof;

FIG. 7 is a top plan view of a wig base according to a second embodiment of our new design;

FIG. 8 is a bottom plan view thereof;

FIG. 9 is a front view thereof;

FIG. 10 is a rear view thereof;

FIG. 11 is a right side view thereof; and,

FIG. 12 is a left side view thereof. 

CLAIM The ornamental design for a wig base, as shown and described. 